Home / 3,789.40-5,231.26-2,936.74

Finding the Fourth Proportional to 3,789.40, 5,231.26 and 2,936.74

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Solution

The fourth proportional to 3,789.40, 5,231.26 and 2,936.74 is: 4,054.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,789.40 : 5,231.26 = 2,936.74 : x
  2. Step 2: Convert to fraction form
    3,789.40/5,231.26 = 2,936.74/x
  3. Step 3: Cross multiply
    3,789.40x = 5,231.26 × 2,936.74
  4. Step 4: Simplify right side
    3,789.40x = 15,362,850.49
  5. Step 5: Solve for x
    x = 15,362,850.49/3,789.40
  6. Step 6: Final answer
    x = 4,054.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.